Problem casting on

This always happens when knitting from right to left, no matter how slowly the carriage is taken across the beds. It doesn’t happen when knitting on the main bed only. I have checked the brushes and they seem okay. I have sprayed the cones with silicone and I have fed the yarn through my yarn twister. The machine is in good condition and is clean. All the signs indicate a problem with the ribber carriage, but I am at a loss to fathom out what might be the problem. Can anyone help?

Thanks Vicci Self by e-mail

Twist the three strands together for approximately length of cast on. This normally solves cast on problem.